boards/qn9080dk: Add SPI NOR flash definition

The QN9080-DK board has a 2 Mbit MX25R2035F SPI NOR flash connected to
SPI0. This patch adds the flash definition to the board.

boards/qn9080dk/Makefile.dep

@@ -2,3 +2,8 @@ ifneq (,$(filter saul_default,$(USEMODULE)))
   USEMODULE += saul_gpio
   USEMODULE += mma8x5x
 endif
+
+# For MX25R2035F on SPI_DEV(0).
+ifneq (,$(filter mtd,$(USEMODULE)))
+  USEMODULE += mtd_spi_nor
+endif

boards/qn9080dk/board.c

@@ -21,8 +21,44 @@
 #include "cpu.h"
 #include "board.h"
 
+#include "mtd.h"
+#include "mtd_spi_nor.h"
+#include "timex.h"
+
 #include "periph/gpio.h"
 
+#ifdef MODULE_MTD
+/* MX25R2035F */
+static const mtd_spi_nor_params_t _mtd_nor_params = {
+    .opcode = &mtd_spi_nor_opcode_default,
+    .wait_chip_erase   = 15000LU * US_PER_MS,
+    .wait_64k_erase    = 3500LU * US_PER_MS,
+    .wait_32k_erase    = 1750LU * US_PER_MS,
+    .wait_sector_erase = 240LU * US_PER_MS,
+    .wait_chip_wake_up = 1LU * US_PER_MS,
+    .clk  = CLOCK_CORECLOCK,  /* Max fR and fC is 33 MHz, max core is 32 MHz. */
+    .flag = SPI_NOR_F_SECT_4K | SPI_NOR_F_SECT_32K | SPI_NOR_F_SECT_64K,
+    .spi  = SPI_DEV(0),
+    .mode = SPI_MODE_0,
+    .cs   = SPI_HWCS(0),  /* GPIO(PORT_A, 3) is used for HWCS(0) on FC2 */
+    .wp   = GPIO_UNDEF,
+    .hold = GPIO_UNDEF,
+    .addr_width = 3,  /* 24-bit addresses */
+};
+
+static mtd_spi_nor_t mtd_nor_dev = {
+    .base = {
+        .driver = &mtd_spi_nor_driver,
+        .page_size = 256,
+        .pages_per_sector = 16,  /* 4 KiB sectors */
+        .sector_count = 64,
+    },
+    .params = &_mtd_nor_params,
+};
+
+mtd_dev_t *mtd0 = (mtd_dev_t *)&mtd_nor_dev;
+#endif /* MODULE_MTD */
+
 void board_init(void)
 {
     /* Initialize LEDs and Buttons. */

boards/qn9080dk/include/board.h

@@ -20,6 +20,7 @@
 #define BOARD_H
 
 #include "cpu.h"
+#include "mtd.h"
 #include "periph_conf.h"
 #include "periph_cpu.h"
 
@@ -68,6 +69,14 @@ extern "C" {
 #define MMA8X5X_PARAM_TYPE      (MMA8X5X_TYPE_MMA8652)
 /** @} */
 
+/**
+ * @name MTD configuration
+ * @{
+ */
+extern mtd_dev_t *mtd0;
+#define MTD_0 mtd0
+/** @} */
+
 /**
  * @brief   Initialize board specific hardware
  */